//  Copyright 2008 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.apache.tapestry5.ioc.internal.services;

/**
 * Used to inject constants into fields via the constructor.
 */
public interface ConstantInjector
{
    /**
     * Injects a value.  On the first injection of the value, it is assigned a field (of the given type).
     *
     * @param type     type of field
     * @param instance instance of the type
     * @return name of field in generated class containing the value
     */
    <T> String inject(Class<T> type, T instance);
}
